Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management)
Online ISSN : 2185-6605
ISSN-L : 2185-6605
Volume 73, Issue 4
Displaying 1-16 of 16 articles from this issue
Special Issue(Paper)
  • Harumichi MURAOKA, Yoshio NOGUCHI, Koji SUZUKI
    2017 Volume 73 Issue 4 Pages I_1-I_9
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     This study revealed the current situation and problems for engineers of local government through hearing survey and questionnaire, and discussed the desired role and duty for them and the required counter-measures for solving the problems. First, we summarized the many comments for their job environments and problems of local government and divided them into 6 categories such as “job”, “skill and technology”, “cultivation”, “system”, “position” and “consciousness” for the hearing survey. Second, we confirmed about the problems by questionnaire for many local government engineers. Third, we considered the six categories from the structured analysis of construction management drawing and clarified the desired role and duty for engineers of local government. Finally, we proposed the necessity of ethics for engineers, management of technology, technology evaluation in order to solve the their current problems.
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  • Mitsugu NOMURA, Shinichi AKUTAGAWA, Takeshi SATO
    2017 Volume 73 Issue 4 Pages I_33-I_44
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     It is an administrative requirement for a slope engineer to secure safety of construction for workers on-site, engineers, owners and citizens. Various monitoring systems have been built and used so far, but there have been no comprehensive way to meet an accountability of the performance of the slope monitoring system up to now.
     This paper proposes a new way for slope engineers to design and quantitatively evaluate the performance of a slope monitoring system by using the fundamental concept stated in FMEA with a special interest in employment of the On-Site Visualization strategy. Case studies on an actual slope where a small-scale collapse actually occurred, together with a set of simulation of evaluating fictitious monitoring projects by experienced engineers, demonstrate that the proposed evaluation scheme gives a new way for slope engineers to design and evaluate a monitoring system to secure safety in a quantitative manner.
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  • Yuichi KOBAYASHI, Takuji NOMA, Ichiro KOBAYASHI, Seigo OGATA
    2017 Volume 73 Issue 4 Pages I_45-I_54
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     The ShinSuizenji station improvement project was implemented about 4 years from 2007. This area is the important cross section for transportation which simultaneously constructed along with other complicated project. Even more the JR九州 Kyushu necessary to operate all of Shinkansen super Express before March, 2011. Therefore this project is needed to cross-coordination with client for easily to design-build.
     Our laboratory was considered the role regard to 2 cases which the second-tier consultation system was particularly useful in this project. As the result, we can confirm the method to success the project like this project was the person who can accomplish them assignment to manage data of entire of the project. This paper proposes and defines the team which manages the project, and it was supported from indispensable person (Team) and we considered that team was organized by 3 factors.
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  • Jeongsoo SONG, Masahide HORITA
    2017 Volume 73 Issue 4 Pages I_64-I_75
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     There have been an increasing number of attempts to introduce the new contracting schemes in construction projects in Japan, among which is target cost contracting with a pain/gain share mechanism. This paper aims at building a theoretical model that formally evaluates the effects of a risk share on the behaviors of the project owner and the contractors. A numerical illustration is made based on the cost breakdown of a real project. Our analysis shows that the effect of introducing a target cost contract depends primarily on the cost variance and the contractor's potential capability towards cost reduction. From a stochastic simulation, it has also been suggested that stepwise risk shares set according to the level of cost variance have significant merits.
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  • Tomoki ONISHI, Kazuaki MIYAMOTO
    2017 Volume 73 Issue 4 Pages I_76-I_87
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     PFI projects which utilize private finance and skills in infrastructure procurements have become popular in Japan. In most se-lection of preferred bidder of the projects, economically most advantageous tender approach, which considers both bid price and service contents, is adopted. However few studies have been conducted on various types of equations for the evaluation. There-fore, the purpose of the present study is to identify issues in the PFI procurement process and propose a robust approach to improve the situation. At first, existing evaluation equations are collected in the last five years and compared through classification. Then, based on simulations with the most popular evaluation equation based on the lowest price, it is revealed the best tender may be replaced by the second depending on a price bidden by a third party. In order to overcome the problems discussed from various viewpoints including the replacement of preferred bidder, an evaluation equation which consists of the target price with the limit of lowest price is proposed and the advantages are clarified.
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  • Daisuke NITTA, Kazumasa OZAWA
    2017 Volume 73 Issue 4 Pages I_88-I_99
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     After a commencement of "the Act on the Partial Revision of the Act on Promoting Quality Assurance of Public Works", the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has promoted to introduce various kinds of project delivery, and new contract methods. ECI method is one of new contract methods. It has recently been applied to some building works in Japan. The authors interviewed and analyzed some cases. As the result, it was clarified that there were so many owners who aimed to avoid failure in bidding, there were so many objects applying the technology of contractor, reducing the contraction period, and decreasing design changes. And it was also found that the arrangement of the competitive environment on the time of proposal and owner's leadership at the time of cooperative work were important.
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  • Rina HASUIKE, Koji KINOSHITA, Kenji YAJIMA, Akiyoshi TAKAGI, Keitetsu ...
    2017 Volume 73 Issue 4 Pages I_100-I_111
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     The Cross-ministerial Strategic Innovation Promotion Program (SIP) aims to keep safe and secure infrastructure systems by utilizing most advanced information technologies and robotics technologies. Regional universities such as Gifu University are acting for the new technologies proposed by SIP to be used in infrastructure maintenance work of local governments. Accelerating applications of the new technologies to infrastructure maintenance work is expected by stakeholders sharing differences in opinions. With the aim of clarifying obstacles and countermeasures, questionnaire and interview surveys were carried out to contractees, contractors of public works and developers of new technologies. In case of inspection technologies, for example, there were many opinions that recommending the use of new technologies in the standards for bridge inspection procedures has the most effect on the regional implementation. Besides, seminars and field trials of the new technologies have been held to match the needs of infrastructure maintenance with the seeds of technical developments.
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  • Yoshinori MORI, Shoichi AKIBA, Kentaro SEKI
    2017 Volume 73 Issue 4 Pages I_120-I_129
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     As for an actual situation of road administration, in addition to our normal duties, we are pressed by disaster response which occurs unexpectedly under the condition of chronic manpower shortage, so that we are not able to take enough measures for new policy.
     This research will show you my personal view of the futuristic direction of road infrastructure management with a focus on measures for disaster prevention and maintenance according to my experiences derived by activities in the research institute to which I belong now and in national research institute and road administration office to which I belonged in the past and knowledge derived by activities in committee of Japan Society of Civil Engineers.
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  • Yutaka HIRASHIMA, Kazumasa OZAWA
    2017 Volume 73 Issue 4 Pages I_130-I_141
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     The deduction mechanism on a payment system applied to highway operation & maintenance works is written in this paper. Payment with the deduction mechanism is based on the performance by a private sector to make a highway available as well as providing safety and comfort for traffic users. The reasonable deduction mechanism on a payment system is analyzed by the view point of the principal-agent problem. The accountable model oq deduction mechanism with performance indicators is proposed. By using the formula of model, the authors propose the deduction mechanism applied to operation and maintenance works of highway projects.
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  • Hiroaki MORI, Satoshi SUGIURA, Tomoyoshi EBI, Akiyoshi TAKAGI
    2017 Volume 73 Issue 4 Pages I_142-I_152
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     Currently, efforts to maintain road infrastructures efficiently has been focused in Japan. However, the budget and human resources are limited in small municipalities compared with the national government. Therefore, it is difficult for small municipalities to adopt the same method as the national government or large municipalities. An efficient maintenance plan, that can be adopted by small local governments, is needed. Gifu prefecture adopts a comprehensive maintenance planning, named “Infrastructure maintenance Plan,” in order to improve the efficiency of investment by dealing with repair necessity of multiple structures unitarily based on risk assessment. However, it is difficult for small municipalities to adopt risk assessment because a lot of data is needed. In this paper, we develop the popularized maintenance planning model for road infrastructures based on risk assessment. We tried the developed model on existing roads and verified its appropriateness by comparing it with the priority order by AHP and the priority order by administrator's decision.
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  • Atsukuni KAJIMA, Kiyoshi KOBAYASHI, Kengo OBAMA, Kiyoyuki KAITO
    2017 Volume 73 Issue 4 Pages I_153-I_164
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     This paper investigates the reasons of why the amount of non-restored failures and damages have been steadily increased as time passes by. This trends may be attributed to the diversity and complexity of initialization processes of failures as well as insufficient governance of rehabilitation/maintenance management. Based upon the data base of failures and damages, which have been detected by inspection of expressway facilities, the paper analyzes the statistical aspects of failures and management issues, which are typically characterized by the following factors: i.e., the initialization time of failures, the presence of causality that failures spread and amplify to one another, the influence of maintenance activities on the following occurrence of failure, the influence of the accumulation of non-restored failures on the judgment to restore, and the determinative factors for decisions to restore. The paper tries to suggest the necessary conditions enabling infrastructure management bodies to control the failure occurrence process. Also, the paper underlines importance of the managerial methodology which is designed to keep the amounts of non-restored failures in sufficiently lower levels through time.
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  • Satoshi KATO, Yuji MUNEHIRO, Takashi GOSO, Ryo MATSUMARU
    2017 Volume 73 Issue 4 Pages I_165-I_175
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     The roles and expectations placed on Public Private Partnership has been increasing even in areas of regional development and international cooperation in developing countries. However, we have already seen that this type of reginal development PPP faces the problem of small project sizes, which needs to be resolved in terms of private sector participation. This paper will first deal with “Bundling”, which has been discussed with the intention of expanding the Japanese PPP/PFI market, and aims to verify the effect of this method by confirming if it is applicable to PPP in the international market, and also to look at whether or not it could be a solution to the problems in regional development PPP in developing countries. The conclusion we reached in this paper is that “Bundling”, already verified based upon cases in the Japanese domestic PPP/PFI market, can be applied and diverted to international PPP projects, while viewing the case in the Mindanao, Philippines, for the purpose of achieving regional development through bundled multiple PPP projects, especially renewable energy projects, promoted by a Japanese Civil Engineering Consulting Firm, and therefore that the method could be effective in regional development PPP in developing countries.
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Special Issue(Report)
  • Kazuo TAKAHASHI, Hiroshi MATSUDA, Shozo NAKAMURA, Chihiro MORITA
    2017 Volume 73 Issue 4 Pages I_10-I_20
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     In 2008, Nagasaki University opened a MICHIMORI training course to nurture experts in the maintenance and management of roads ahead of the rest of the country. It is a collaborative consortium of construction industry, the university and local government. We develop human resources necessary for infrastructure maintenance management.
     In April 2015, the number of MICHIMORI certified people reached approximately 200. The activities, uses and intentions of MICHIMORI certified persons have not been specifically articulated so far. Based on this questionnaire survey, we gained understanding of the current status of activities as a MICHIMORI certified person, activities as a specialized engineer, obtaining information on MICHIMORI, self-evaluation as a MICHIMORI certified person.
     We surveyed the situation of the MICHIMORI training course and clarified the issues. Also, based on the results of the questionnaire survey, we will review our future MICHIMORI training course.
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  • Hiroshi MATSUDA, Shozo NAKAMURA, Chihiro MORITA, Toshihiro OKUMATSU, K ...
    2017 Volume 73 Issue 4 Pages I_21-I_32
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     Nagasaki University Infrastructures Lifetime-Extending Maintenance Research Center is striving to train infrastructure maintenance engineers. In 2008, Nagasaki University opened a MICHIMORI training course to nurture experts in the maintenance and management of roads ahead of the rest of the country.
     We have developed a curriculum for MICHIMORI training courses for infrastructure maintenance and management for civil engineers and have continued human resource development. Until now, the activities of MICHIMORI certified people were mainly volunteers. In 2015, MICHIMORI training course was approved by the Ministry of Land, Infrastructure and Transport. It was recognized as qualification for infrastructure maintenance. In addition, the range of activities expanded.
     In this paper, we summarized the implementation system of MICHIMORI training course, curriculum, achievement evaluation standards, number of trainees etc. In addition, we report the future policy of MICHIMORI certified persons.
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  • Keizo KANZAKI
    2017 Volume 73 Issue 4 Pages I_55-I_63
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     The quitting a job of the expert worker and the lack of the technical transmission to the young worker with low birthrate, and the deterioration of the infrastructure institution which will increase rapidly in future will be the problem that must put up measures immediately in the construction business. CIM and i-Construction proposed by Ministry of Land , Infrastructure, Transport and Tourism enforce the improvement of the productivity of the construction site and the maintenance and check for the life cycle of the structure using three-dimensional model in order to solve such a problem, and they may be said that it is the big change of the construction production system.
     In this report, I survey three examples of the tool which I can utilize three-dimensional model for plan, measuring, construction, and maintenance based on a policy of CIM and i-Construction, explain an effective making method of the three-dimensional model suitable for a construction scale and contents and examine the effective utilization method and introduction effect in the construction production system.
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  • Tetsumasa TANAKA, Hiroshi MATSUDA, Tatsunori MAKIZUMI, Kazuo TAKAHASHI
    2017 Volume 73 Issue 4 Pages I_112-I_119
    Published: 2017
    Released on J-STAGE: February 05, 2018
    JOURNAL FREE ACCESS
     In the field of "infrastructure maintenance / update / management technology" in SIP, research and development of various inspections and diagnostic technologies are advanced. By utilizing these for maintenance, it is expected to contribute to the reduction of the total cost related to maintenance and the improvement of the efficiency of maintenance work. It is important to research, develop, and demonstrate new technologies that will contribute to the prolongation of infrastructure lifetime and to introduce the developed technologies to the field. In the Kyushu Yamaguchi area, it is also necessary to promote matching with innovative technologies strategically and precisely based on the needs of local governments. Therefore, in this research, we surveyed the actual state of infrastructure maintenance work for local governments in the Kyushu Yamaguchi area.
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